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Life in the Oceans ENVI 121 – Lab. Dr. Demopoulos Email: amandad@ucsd.edu http://iod.ucsd.edu/~amanda/. Life in the Oceans ENVI 121 – Lab. Points. Date. Subject. Keeping a Lab Notebook. Why keep a Lab Notebook?. Record of your work Basis for writing Materials and Methods Results
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Life in the OceansENVI 121 – Lab Dr. Demopoulos Email: amandad@ucsd.edu http://iod.ucsd.edu/~amanda/
Life in the Oceans ENVI 121 – Lab Points Date Subject
Why keep a Lab Notebook? • Record of your work • Basis for writing • Materials and Methods • Results • Back up if computer data files are lost • Study guide
What goes into a lab notebook? • Date and title of lab • All lecture notes • All drawings with labels • If we are doing an experiment include: methods, hypotheses, and results • Notebook should be well-organized and legible
Review: Scientific Method • Question • Observations • Hypothesis • testable, falsifiable • Experiment • Experimental group, controls • Results/Interpretation • Scientific Theory
Review: Scientific Method Induction: specific to general Deduction: general to specific
In situ • Uncontrolled variables • Ex situ (typically) • Fewer uncontrolled variables • Test one or a couple variables at one time • Artificial setting Review: Scientific Method Field Observations vs. Controlled Experiment
Scientific experiment with Phaeodactylum tricornutum • Diatom • Unicellular algae • ~ 50-500 mm • Found in fresh and salt water ecosystems • Photosynthesize in the light, “fixing” carbon from CO2 into carbohydrates and releasing oxygen in the process http://www.marine-genomics-europe.org/gallery/displayimage.php?album=9&pos=0
Graphing Detective • Question: • Looking at the axes and data, what do we know about how the study was done?
Questions: • What else do we know about how the study was done? • What can’t you tell about how this study was done? • What specific question is being addressed? • What is the most important result shown by the graph?
Assignment: write 1 paragraph describing this study using the graph and legend. Due next Monday, September 18th